Fujitsu ESPRIMO D556/E85+ Memory Upgrades ✓­ Guaranteed Compatible

Learn more about Fujitsu ESPRIMO D556/E85+ memory

What Fujitsu ESPRIMO D556/E85+ DIMM type is supported?

UDIMM

Why are there various DIMM types supported?

Factory configured D556/E85+ systems often have smaller, less expensive modules. As more memory is required different density and technologies are needed. DIMM type mixing is never recommended.

What is an unbuffered memory module?

Unbuffered, non-registered DIMM memory modules have no buffer/register component between the DRAM modules and the motherboard memory controller.

What Fujitsu ESPRIMO D556/E85+ memory speed is supported?

DDR4-2133 and DDR4-2400

Why may there be various speeds of Fujitsu ESPRIMO D556/E85+ memory?

Some servers often have various configurations and versions. If you are unsure what you need, please refer to your D556/E85+ manual or data sheet. If you need tech support, please contact us.

General DIMM population guideline for Fujitsu ESPRIMO D556/E85+ upgrade to consider.

Some may or may not apply.

• If mixing memory speeds, all 2 DIMMs run at the lowest DDR4-2133 bus frequency.
• Install DIMMs starting furthest from the processor.
• Do not install DIMMs if the corresponding processor is not installed.
• If only one processor is installed in a two CPU system, only half of the DIMM slots are available.
• To maximize performance, balance the total memory capacity between all installed processors.
• It is not required, but it is recommended to load the channels similarly if possible.

Why are there so many Fujitsu ESPRIMO D556/E85+ upgrade options?

IT buyers come from all walks of life. Some purchase by OEM part number. Some purchase by original module part number. Our goal is to give you confidence when purchasing Fujitsu ESPRIMO D556/E85+ upgrades. All modules listed are qualified to work in your Fujitsu ESPRIMO D556/E85+.